Such public utilities ought to always prioritize privacy, platform-independence, and empowering market competion long- and short-term. And to achieve that you need to start at the design level.
In this case, clearly, you either have to avoid relying on app attestation or lay the foundation for an unrestricted number of independent chain of trust frameworks.
The latter, of course, is a policy-level issue, but the ones responsible for the design and development are the ones who need to pass such concerns up the chain.
If you want to be critical of the outcome on compatibility grounds, forcing a grind to increase technical compatibility is the wrong thing to ask for. That must necessarily always leave some people behind. The only honest alternative positions on that front are (a) the government issues the tech to everybody itself or (b) the government doesn't build advanced systems at all.
The German government offices rely on a lot of quaint-looking paper based processes, but they have one thing going for them: working through them can be done with pen and paper - tools that are available for cheap and broadly compatible. It's probably not such a bad thing after all?